Window shade fastening means



May 4, 1943. H. F. SNYDER WINDOW SHADE FASTENING MEANS Filed Aug. 1. 9, 1941 INVENTOl-l.

Patented May 4, 1943 UNITED STATES PATENT OFFICE WINDOW SHADE FASTENING MEANS .Harry F. Snyder, Montpelier, Ind., assignor to Cl0pay Corporation, Cincinnati, Ohio, a. corporation of Maryland Application August 19, 1941, Serial N 407,462

6 Glaims.

. This invention relates to means for fastenin a conventional window shade to a shade roller, and is particularly concerned with the provision of means directly associated with the roller for fastening the shade thereto without the use of tacks, adhesive, or other instrumentalitie which are likely to mar or tear the surface of the shade. In a collateral way, the invention is likewise concerned with the problem of attaching a, reversible window shade to a roller. By a reversible window shade is meant a shade having a marginal hem at either end for the reception of the conventional stiffening slat. In this type of construction, the positioning of the shade on the roller may be reversed after the extended hem has become worn, and the hem which has previously been adjacent the roller may be extended and a stiffening slat inserted therein.

In the construction of a reversible window shade, the problem is one of providing means for attachment of the shade to the roller without in any way marring or tearing the shade at the point of attachment, because the hem which is originally attached to the roller will become the extended hem when the positioning of the shade on the roller has been reversed.

Briefly, the present invention contemplates the provision of a projecting key in close association with the shade roller, which projecting key will frictionally engage the inner surface of the marginal hem of the shade and lock the shade against relative movement with respect to the roller.

With these premises in mind, one of the objects of the present invention has been to provide means for fastening a window shade to a roller without in any way marring, tearing, or otherwise disfiguring the shade in the vicinity of the point or points of attachments.

Another object has been to provide shade attaching means which are directly associated with the roller, and which may, without removal or adjustment, serve as attaching means for either hem of the shade or for successive shades.

Another object has been to provide shade attaching means of extremely simple construction which may be manufactured readily at slight cost and inserted in attaching position in the roller with great facility.

Other and further objects and advantages will be apparent from a consideration of the further and more detailed description of the invention when considered in conjunction with the drawing in which:

Figure 1 represents an elevational view of a window shade and roller combination employing the preferred attaching mean of the present invention. V Y

Figure 2 is a sectional view along theline 2-2 of Figure 1.

Figure 3 is a sectional view along the line 33 of Figure 2.

Figure'4 is a similar View showing a slight modification of the invention.

The window shade I, as shown in Figure. 1, is of more or. less conventional construction-except that it is of the reversible type; that 'is, t s a marginal hem ateither end for the re-. ception of the stiffening slat indicated as 9 in Figure 2. The shade l is positioned on a roller 2, which has been inserted through a marginal hem 3 formed by the stitch line 4. A like hem 5, formed by the stitch line 6, is provided at the extended margin of the shade for the reception of the stiffening slat 9.

Neither the hems nor the stitch lines need be of any particular type except that it is preferable that the inner circumference of the hem pocket should exceed only slightly the outer circumference of the roller. This relationship is best shown in Figure 2.

The key or projection l is preferably one or more lengths of wire bent and folded at either end with the ends pointed and inserted into the outer surface of the shade roller to provide a lateral projection which, upon engagement with the pocket 8 between the outer circumference of the roller and the inner surface of the hem pocket 3, will prevent relative movement between the roller and the pocket.

This key or projection I may be provided in various different ways and the construction shown constitutes only a preferred form of the invention. The key need not necessarily be formed from wire or even from metal, and there are doubtless other materials or other constructions which will produce the same result. It is not even necessary that the key constitute a separated element and if desired it may be an integral part of the outer surface of the roller.

In the operation of the invention, the projecting key effectively produces a frictional engagement between the roller and the shade so that relative movement is prevented and the shade may be wound on the roller. At the same time, preferably, it does not extend the entire length of the roller and there is little difiiculty in inserting the roller in the hem. Since the key preferably has a smooth surface it does not in any way mar or otherwise damage the shade hem. The hem 5 which is shown extended in the drawing is substantially identical in construction with the hem 3, and this hem is adapted to receive the roller with equal facility when the positioning of the shade has been reversed.

In the modification shown in Figure 4, two keys are employed instead of the one as illustrated in Figure 3. This construction may be preferable in the larger sizes of shades. Obviously, a plurality of keys can be provided if desired.

The key is preferably tightly associated with the roller, although it may be made easily detachable if desired, as, even if detachable, it will be maintained in position by the inner surface of the shade hem when the roller has been inserted through the hem.

Having fully described my invention, I claim:

1. In a window shade roller, attachment means for a shade having a marginal hem, comprising a key projecting outwardly from the outer surface of the roller and adapted to frictionally en-' gage with the inner surface of said marginal hem.

2. In a window shade roller, attachment means for a shade having a marginal hem, comprising a projecting key associated with the roller and extending longitudinally thereof for frictional engagement with the inner surface of the hem.

3. In a window roller, shade attachment means for a shade having a marginal hem, comprising a key element inserted into the surface of the roller, said key element having a smooth surfaced projecting portion adapted to engage said marginal hem and secure the same against relative movement with respect to the roller.

4. In a window shade roller, attachment means for a shade having a marginal hem, comprising a length of wire having sharpened ends bent and inserted into the outer surface of the roller to provide a projection for engagement with said marginal hem to prevent relative movement between the roller and the shape as the roller is turned.

5. In combination a window shade having a marginal hem pocket at one end thereof and a shade roller inserted in said pocket; the inner circumference of said pocket being only slightly larger than the outer circumference of the roller, and key means associated with the roller and projecting therefrom for frictional engagement with the inner surface of the pocket.

6. In combination a reversible window shade having a marginal hem pocket at each end thereof, said marginal hem pockets being of substantially identical size for the reception. of a shade roller and a stiffening slat, a shade roller adapted to fit in either of said pockets and key means associated with the roller and projecting therefrom for frictional engagement with the inner surface of either of said pockets whereby the positioning of the shade on the roller may be reversed.

' HARRY F; SNYDER. 

